A/c High Side

[darkwingduck]

This may be a dumb question but I don't know so I have to ask, and I did a search and didn't find anything. Here it goes, I have a 93 ES300 does the high side refill when you refill the low side with Freon or do you have refill it separately?

[Eric5412]

The a/c system is a closed loop. The compressor sucks freon from the low side ,compresses it into the high side and then the freon flows through the expansion valve back into the low side. Also you ALWAYS want to fill through the low side(as a gas),because if you fill through the high side with the engine running the container you are filling from may/will explode.

[Toysrme]

Same as everything else I've ever heard of, or worked on.

Low side fill only.